Granted Patent
Utility
US 5,883,256 · App. 08/757,089
Process for removing aromatic heterocyclic compounds product-containing solutions
Inventors:
Eckhard Schuler, Karl-Heinz Wenz
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Nov 26, 1996
Inventors
Eckhard Schuler
Karl-Heinz Wenz
Assignee (at issue)
Behringwerke Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.